CHAOS: Congenital high airway obstruction syndrome

Abstract

Congenital high airway obstruction syndrome (CHAOS) is a condition characterized by the existence of an obstruction of the fetal upper airways, which may be partial or complete. It is commonly incompatible with life, so its prenatal diagnosis is important due to the prognosis and the recently described pre and postnatal management options. We present a case of CHAOS in a pregnancy of 21 weeks with a brief review of the current literature about its diagnosis, prognosis and therapeutic alternatives.